Compensating elastic suspension device for vehicles.



R. BONNEVIE. GOMPENSATING ELASTIC SUSPENSION DEVICE FOR VEHICLES.

APPLICATION FILED JAN. 18, 1908.

Patented Jan. 26, 1909.

THEETS-SHEET 1.

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R. BONNEVIE. GOMPENSATING ELASTIC SUSPENSION DEVICE FOR VEHICLES.

APPLIOATION FILED JAN. 18,1908.

Patented Jan. 26, 1909.

3 8HEETS-SHEET 2.

R. B ON N EVI E. OOMPENSATING ELASTIC SUSPENSION DEVICE FOR VEHICLES.

APPLICATION FILED JAN. 18,1908.

Patented Jan. 26, 1909.

3 SHEETS-SHEET 3.

- one and the same pair.

RAYMOND BONNEVIE, or mans-ems,

comrnivsmme nras'rrcscs'rnnsroiv' msvrcn non vnnrctss Specification of Letters Patent.

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Application filed January 18 1908. Serial No.411',508.

To all whom it may concern:

Be it known that I, RAYMOND Bonnnvrn, a citizen of the Republic of France, residing at Rive-de-Gier, France, have invented certain new and useful Improvements in Compensating Elastic Suspension Devices for Vehicles, of which the following is a specification.

This invention relates to compensating elastic suspension devices for vehicles, the peculiar feature of which is that the ordinary spring blades are done away with, and replaced by elastic helical parts or other springs connecting the journals of the two wheels of This arrangement makes it possible to compensate movements in opposite directions of t e wheels relatively to the vehicle frame, which is thus relieved from shocks, which are produced by inequalities of the ground, while the vehicle at the same time remains dperfectly balanced and elastically suspende In the accompanying drawing given by way of example Figure 1 is a front elevation of a motor car showing a device according to this invention, applied to a vehicle having wheels with pivoted journals. Fig. 2 is a vertical section, on an enlarged scale, of a detail of construction corresponding to the arrangement shown in Fig. 1, Fig. 3 is a section on the line AA of Fig. 2, Fig. 4 is a rear elevation of a car provided with the device applied to the non-steering wheels, Fig. 5 is a vertical section on the same scale as Fig. 2, of a constructional detail corresponding to the arrangement shown in Fig. 4, Fig. 6 is a.

cross-section on the line BB of Fig. 5, Fig. 7 is a partial back elevation of a car showing the application of the invention for chain riving.

In this device, the journals a of the pair of wheels are arranged in slide blocks 1) capable of vertical movement on suitable guides 0 secured to the frame or chassis (1. These journals are connected together by cables, belts or chains e passing over guide rollers f, also secured to the frame (1, the horizontal portion of the said cables, belts or chains 6 being provided with elastic devices, such as helical springs, which will permit variable movements of the journals a which at the same time are still elastically connected together. This device gives compensated elastic suspension of the two wheels of one and the same pair as will be hereinafter explained.

When the device is applied to a pair of ported in branches of arms 70 rigidly secured to the frame d. The bottom arm of the part it is extended downwards and carries the guide roller or pinion f (Figs. 2 and 3) over which passes the cable or chain c, one end of which is connected to the corresponding slide block b and the other end to the spring 9. The vertical portion of the chain c is sit uated in the axis ofrotation of the frame 73,-

and to that end passes through the mm nion j which is tubular. The part conncct-' ing the chain c to the slide block b is consti tuted by a shaft 1 provided with aste cellar resting on a series; of balls marr es in slide block b.

A nut or union iece n provided witho posite screw-threads is arranged between t e chain e and the corresponding end of the spring g, so as to enable the tension of the latter to be regulated.

When a cable or a belt 0 is used instead of the chain c, as show; in Fiirls. 1, 4 and 7, the

inion is re aced a u ey p.

P Wheii the device is a p lied to a pair of wheels with invariable ro ling plane that is to say to non-steering wheels as shown in Figs. 4, 5 and 6, the guides c of the journals (1 are arranged directly in the frames 9 or in brackets secured to the frame (1, the said frames or brackets being capable of forming constituent elements of the longitudinal members of the vehicle frame. In this arrangement, the slide block b can move vertically without any pivoting, so the chain c or the belt 0 is connected directly to the slide block b.

The transmission of driving ower to the wheels can be effected either by ardan shafts r, as shown in Figs. 4 and 5, or by a chain 8 as shown in Fig. 7. For this latter arrangement, it is sufficient to do away with the universal joint r and provide the brake drum 5 with teeth corresponding to the driving chain used.

It is obvious that the elastic device 9' can be arranged so as to act by traction as well as by compression, the chains, cables, or belts being capable of being connected to the said device either directly or by means of coupled parts comprising the said device between them.

The parts Ii of the journals a, instead of being arranged with sliding guides 'c secured to the chassis, in the case of non-steering axis, in the case 0 wheels, or secured to frames h mounted so as to be capable of pivoting about a vertical steering wheels, could be permanently securedto their corresponding 1gruides c which would then slide elther in ames secured to the vehicle frame or in pivoted frames h.

In accordance with these constructions,

when two wheels of one and the same pair pass, one over say a utter, and the other over a projection on t e ground, the wheel which passes in the gutter descends relatively to the vehicle frame while the other one rises owing to the connection of the said wheels. 1f the'difierences of level are the same for the two uneven portions of the ground, there is out by tension or by expansion the greater or less excess of the chain or belt connecting the journals of the two wheels.

When the two wheels of one and the same air pass over dilferences of level of the same ind, the shocks resulting therefrom are horizontally absorbed by the elastic device and do not affect the vehicle frame which is thus not subjected to any considerable change of level.

What I claim as my invention and desire to secure by Letters Patent is:.

An elastic compensating suspension device for vehicles with pivoted journals, comprising the combination of elastic members,

arranged transversely of the vehicle frame, and connected by cables, belts or chains to the journals of the twowheels of one and the same pair, slide blocks to which the journals are connected, and guides for said slide blocks capable of pivoting with the wheels.

In testimony whereof I have signed my name to this specification in the presence of two subscribin witnesses.

ltAYMOND BONNEVIE. Witnesses:

'MAURIcE BERTIN, LOUIS ALBERTIN. 

